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When The Sims 4 will not open, the cause is usually one of four things: damaged EA app or game files, an outdated Mod, a corrupted file in the Sims 4 user folder, or a Windows/macOS compatibility problem. Start with the quick checks, then work through the fixes in order. Stop when the game launches normally.
Before troubleshooting: check the supported platform
The current PC version requires a 64-bit version of Windows 10 or later, at least 4 GB of RAM, 25 GB of free storage, an additional 1 GB for custom content and saves, and a DirectX 11-compatible graphics device. Windows 32-bit, Windows XP, and Windows Vista are not supported.
On Mac, the minimum is macOS 10.15 Catalina with a Metal-compatible Mac, 4 GB of RAM, and 25 GB of free storage plus 1 GB for custom content and saves. The Mac version is 64-bit.
Do not follow old advice telling you to install The Sims 4 Legacy Edition. EA stopped making Legacy Edition available on PC and Mac on December 12, 2022. It is no longer a current solution for 32-bit Windows or non-Metal Macs.
#1 Best Overall
- Create unique sims: A variety of sims are yours to personalize, each with distinct appearances, dynamic personalities, and inspiring aspirations
- Build the perfect home: Construct the home of your, and their dreams by planning its layout, choosing furnishings, and altering the landscape and terrain
- Explore vibrant worlds: Travel between locations, discover amazing and distinctive neighborhoods, and encounter captivating venues
- Play with life: Control the rich and entertaining moments of your Sims’ lives from their relationships to their careers
1. Restart the computer and check EA service status
Close The Sims 4 and the EA app completely, restart the computer, and try again. Also check EA’s service-status page before changing files. A service outage can prevent sign-in, downloading, or game startup; clearing a cache cannot repair an EA server outage.
If the EA app says you are offline, a game is missing from the Library, or a download is stuck at “Waiting for download,” continue with the cache reset below.
2. Clear the EA app cache
Cache data can become stale after an update or interrupted download. Clearing it does not uninstall your games or delete Sims saves.
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If the EA app opens
- Open the EA app.
- On Windows, click the three dashes in the far-left corner. On macOS, use the Help menu at the top of the screen.
- Choose Help → App Recovery → Clear Cache.
- Allow the EA app to restart, then sign in and launch The Sims 4.
If the EA app will not open on Windows 10 or 11
- Open Start.
- Click All Apps → EA → App Recovery.
- Select Clear Cache.
- When the EA app opens again, try The Sims 4.
On Mac, the cache process may request your Mac login password to authorize EALaunchHelper. This is your Mac password, not your EA Account password.
3. Repair The Sims 4 in the EA app
Repair checks the installed game files and replaces damaged or missing files. It does not repair a broken save, Mod, or Custom Content file in your Documents folder.
- Open the EA app and select Library.
- Find the The Sims 4 tile.
- Click the Manage icon or the three-dot menu on the tile.
- Choose Repair.
- Wait for the process to finish before launching the game again.
If Repair fails with a folder or permissions error, go to the installation-permission fix later in this guide.
4. Disable the EA in-game overlay
EA lists its in-game overlay as a possible cause of launch failures and crashes on PC. Disable it temporarily:
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Rank #2
![The Sims 4 - Parenthood - Origin PC [Online Game Code]](https://m.media-amazon.com/images/I/51N60qq6z6L._SL160_.jpg)
- Requires The Sims 4 & all game updates. For PC, see minimum system requirements for the pack.
- Develop Parenting Skills – Level up your Sim’s parenting skills to satisfy their child’s needs and influence their behaviors. Gain new abilities through experience and choosing when to discipline bad actions, encourage good behavior, or just let kids be kids.
- Shape Your Sim’s Childhood – The decisions you make influence how your Sim parents and leave a lasting impact on their child’s future. Each choice shapes their personality, affects their traits, influences their family relationships, and guides their path into adulthood.
- Gather your Sim’s family to participate in new activities and spend quality time with each other. Sims of all ages can work together to complete a variety of school projects, express their creativity using construction blocks, or volunteer their time for good.
- Customize your Sims’ looks and their home with new family fashion and build items. Give the kids’ bedrooms extra personality, remodel the kitchen to feel homier, and let your Sims express their sporty or artistic sides with new outfits.
- Open the EA app.
- Click your profile thumbnail.
- Choose Settings → Application.
- Turn In-game overlay off.
- Close and reopen the EA app, then launch The Sims 4.
This is the current EA app path. Instructions referring to an old Origin-specific overlay menu are outdated.
5. Test The Sims 4 without Mods or Custom Content
Mods are a frequent cause of a game that closes during startup, remains on a loading screen, or refuses to load a save. EA automatically disables Mods after a game update because a previously compatible Mod may no longer work. Script Mods are more likely than ordinary Custom Content to break game functions.
Mods can be used only on PC and Mac. They cannot be installed on PlayStation or Xbox.
Safely test after an update
- Start The Sims 4 with Mods disabled.
- Use Resume or Load Game and enter Live Mode.
- Play briefly to check whether the game is stable.
- Do not save during this test.
- Choose Menu → Exit Game, then confirm with Exit Game again.
Do not select Save and Exit while Mods and Custom Content are disabled. Doing so can remove that content from the saved game.
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- Open Options Menu → Game Options → Other.
- Select Enable Custom Content and Mods.
- Exit the game without saving.
- Relaunch The Sims 4.
Before restoring Mods, check the creators’ pages for versions compatible with your current game update. Your game version appears in the lower-left corner of the Main Menu.
Find the broken Mod with the 50/50 method
The Mods folder is at Documents → Electronic Arts → The Sims 4 → Mods. Extract ZIP or RAR downloads before testing them; the game cannot use the compressed archive as an installed Mod.
- Move every Mod out of the Mods folder to a temporary folder on the Desktop.
- Put approximately half of the Mods back.
- Launch the game and test it.
- If it fails, remove half of that group. If it works, test the other half.
- Continue halving the failing group until you identify the offending file.
Test Game Mods before ordinary Custom Content. EA lists error codes 102, 123, 125, 127, 129, and 131 as commonly associated with game-script problems in which a script Mod may be involved. Error 110 commonly appears after an update and can indicate outdated Mods.
Rank #3
![The Sims 4 - Vampires - Origin PC [Online Game Code]](https://m.media-amazon.com/images/I/513y5rPI8OL._SL160_.jpg)
- Requires The Sims 4 & all game updates. For PC, see minimum system requirements for the pack.
- Create Vampires
- Unleash Supernatural Powers
- Escape to Forgotten Hollow
- Live the Immortal Life
6. Reset the Sims 4 user folder
If the game still will not load with Mods removed, a damaged save, Gallery download, cache file, or other user file may be responsible. The user folder is separate from the installed game, so repairing the game files will not fix it.
Back up first
- Open Documents → Electronic Arts.
- Copy the entire The Sims 4 folder to the Desktop.
- Rename the copy to something such as Sims 4 Backup.
Reset on Windows
- Close The Sims 4 and the EA app.
- Open Documents → Electronic Arts.
- Delete the The Sims 4 folder.
- Empty the Recycle Bin.
- Restart the computer.
- Launch The Sims 4 and test it before copying anything back.
Reset on Mac
- Close the game and EA app.
- In Finder, open Documents → Electronic Arts.
- Select The Sims 4 and press Command+Delete.
- Empty the Trash.
- Restart the Mac and launch the game.
The reset creates a new user folder without your old saves, Mods, or downloaded Gallery content. If the game now works, the problem is in the old user files. If it still fails, restore your backup because those files are not the cause.
Restore files selectively
Do not copy the entire backup back immediately. To test for a damaged save, copy only the backup’s saves folder into the newly generated The Sims 4 folder. If the failure returns, remove that folder and copy individual save files one at a time. The file added immediately before the failure returns is the likely suspect.
On Windows, to restore the complete backup, delete the newly generated The Sims 4 folder, empty the Recycle Bin, rename the backup to The Sims 4, and copy it into Documents → Electronic Arts.
7. Fix EA app permissions and installation errors
Run the EA app as administrator on Windows
- Close the EA app.
- Right-click its shortcut or executable.
- Select Run As Administrator.
- Try to repair or launch The Sims 4.
Resolve “Create Folder Error”
This error indicates that the EA app cannot write to the game directory.
- In File Explorer, right-click the Sims 4 installation folder and select Properties.
- Open Security → Advanced.
- Check whether the SYSTEM account has Full control.
- If it does not, choose Security → Edit → SYSTEM.
- Set Full control to Allow, then click Apply.
Check for the 4 GB download limit
If an EA app download always stops at exactly 4 GB, check the destination drive’s file system. FAT32 cannot store files larger than 4 GB. Install the game to an NTFS drive on Windows instead.
8. Reinstall the EA app if it is damaged
If the EA app displays EC:109 – App files are corrupted or will not start because files are missing, download a fresh copy from EA.com.
Rank #4
![The Sims 4 - Jungle Adventure - Origin PC [Online Game Code]](https://m.media-amazon.com/images/I/51YOQJWhYlL._SL160_.jpg)
- Requires The Sims 4 & all game updates. For PC, see minimum system requirements for the pack.
- Travel to Selvadorada a new destination where your Sims can befriend locals at the cantina or purchase essential survival gear.
- Discover a Hidden Temple: Your Sims will be pleasantly surprised with what they’ll find when they stumble upon a unique temple.
- Collect Ancient Artifacts for Home: Uncover hidden items as Sims seek out ancient artifacts and mysterious relics.
On Windows, uninstall it through Control Panel → Programs → Uninstall a program → EA app, then reinstall the latest EA app and sign in again. If you see EC:20:403, you are trying to use Origin on Windows; Origin is no longer available there, so install and use the EA app.
9. Address EC:10701 and port 3216 conflicts
EC:10701 – Communication error means the EA app could not run on port 3216. VPNs and virtual network adapters from Hyper-V, TAP-Windows, or VMware can interfere. Temporarily close the VPN and disable unnecessary virtual network adapters, then restart the EA app.
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sudo lsof -i -P | grep LISTEN | grep :3216Enter your Mac login password when prompted. Do not terminate a process unless you know what it is and understand the effect.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.10. Fix “Preparing game,” crashes, and weak hardware
If the EA app remains on Preparing game, clear its cache, close background applications that limit EA app performance, install Windows and graphics-driver updates, and retry. If the problem persists, perform a clean boot to identify a conflicting startup application.
For a game that opens and then crashes, close overlays and background applications, repair the game, update the graphics driver, and try limiting the frame rate or enabling V-Sync. On a low-powered laptop, enable … → Game Options → Laptop Mode.
Try Memory Boost on PC
Memory Boost is a PC-only Early Access feature that can optimize memory use, reduce lag, improve frame rates, and help prevent crashes. It requires DirectX 11.
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![The Sims 4 - Kids Room Stuff - Origin PC [Online Game Code]](https://m.media-amazon.com/images/I/51e1zRnkG2L._SL160_.jpg)
- Requires The Sims 4 & all game updates. For PC, see minimum system requirements for the pack.
- Customize Kids Rooms – Build kids bedrooms that are both expressive and full of style. Excite your Sim’s imagination with colorful new furniture and themed decorations ranging from space robots to fun flower flourishes.
- Battle with Monsters – Collect and trade monster cards featuring your Sim’s favorite magical creatures. Use cards in the electronic battle station to bring them to life and challenge friends to a monster duel that’s sure to excite.
- Play with Puppets – With the all-new puppet theater and a bit of imagination, Sims can tell a variety of whimsical stories to entertain an audience of family and friends.
- Kids Fashion – Trendy yet playful kids clothing and hairstyles let Sims showcase their individual style, or highlight obsession with the latest tween heartthrob.
- Open the Main Menu and click the three dots.
- Choose Game Options → Other.
- Set Memory Boost to Enable, Disable, or Automatic.
- Allow the game to restart.
To verify the setting, press Control + Shift + C, enter version, and press Enter. (FPB) in the Summary Line means Memory Boost is enabled. Memory Boost is unavailable with DirectX 9; disable it if you need to run DX9. The active DirectX version appears in the lower-left corner of the Main Menu.
What the result tells you
| What happens | Most likely cause | Next action |
|---|---|---|
| The EA app is offline or downloads wait indefinitely | EA cache or service issue | Check service status, then clear the EA app cache |
| Repair finds damaged files | Broken installed game files | Allow Repair to finish and relaunch |
| The game works with Mods removed | Outdated or broken Mod/Custom Content | Use the 50/50 method and update or remove the culprit |
| The game works with a new user folder | Corrupted save, Gallery file, or user data | Restore saves and content selectively |
| It fails at exactly 4 GB during download | FAT32 destination drive | Use an NTFS destination drive |
| EC:10701 appears | Port 3216 conflict | Close VPN software and investigate virtual adapters |
| The game still fails after a clean user-folder test | Platform, driver, EA app, permissions, or hardware issue | Check requirements, reinstall the EA app, update drivers, or contact EA Support |
Final checks before contacting EA Support
- Confirm your operating system is supported and 64-bit.
- Record the exact error code or crash behavior.
- Note the Sims 4 version shown in the lower-left corner of the Main Menu, if you can reach it.
- State whether the game works after removing Mods and resetting the user folder.
- Include whether you use a VPN, virtual machine software, or third-party overlays.
FAQ
Why does Sims 4 open and immediately close?
Common causes include an outdated Script Mod, damaged installed files, an EA overlay conflict, graphics-driver problems, or a corrupted Sims 4 user file. Test with Mods removed, repair the game in the EA app, disable the overlay, and reset the user folder if necessary.
Will repairing The Sims 4 delete my saves?
No. EA app Repair checks installed game files. Saves, Mods, and Custom Content are stored separately in Documents → Electronic Arts → The Sims 4. Back up that folder before performing more invasive troubleshooting.
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Can I use Sims 4 Legacy Edition on an old computer?
No. EA stopped making Legacy Edition available on PC and Mac on December 12, 2022. The current game requires 64-bit Windows 10 or later, or Metal-compatible macOS 10.15 Catalina or later.
How do I know whether a Mod is stopping Sims 4 from launching?
Move the Mods out of Documents → Electronic Arts → The Sims 4 → Mods and launch the game without them. If it works, restore Mods in batches using the 50/50 method until the broken Mod is identified.
Why should I avoid saving while testing with Mods disabled?
EA warns that saving while Custom Content and Mods are disabled can remove that content from the saved game. Test Live Mode, then choose Menu → Exit Game instead of Save and Exit.
What does a Sims 4 download stuck at 4 GB mean?
The destination drive may be formatted as FAT32. FAT32 cannot handle files larger than 4 GB, so install the game to an NTFS drive on Windows.
Do these 3 things before closing this tab:
1Clear out junk files and repair common Windows errors2Scan for outdated or missing drivers - takes under a minute3Repair Windows errors before they cause bigger problemsThe Bottom Line
For most launch failures, the shortest reliable sequence is: clear the EA app cache, repair The Sims 4, disable the EA in-game overlay, test without Mods, and reset the Sims 4 user folder with a backup. If a clean user folder does not help, focus on platform requirements, graphics drivers, permissions, EA app installation, VPN or virtual-adapter conflicts, and hardware limitations rather than repeatedly repairing the same save or Mod files.
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